Chimney-thimble



UNITED STATES PATENT FFICEQ PATRICK D. SEXTON, OF WORCESTER,MASSACHUSETTS.

CHIMNEY-THIMBLE.

SPECIFICATION forming part of Letters Patent No. 370,420, datedSeptember 27, 1887.

Application filed March 30, 1887. SerialNo. 233,062. (No model.)

To all whom it may concern:

Be it known that I, PATRICK D. SEXToN, of Worcester, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in Chimney- Thimbles; and I do hereby declare thatthe following isafull, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thisspecification, and in which- Figure 1 represents a front view of myimproved thimble fastened in position ready for plastering. Fig. 2 is aside view of the thimble. Fig. 3 is a central vertical section throughthe parts shown in Fig. 1, taken on line a, same figure; and Fig. dis asection, upon an enlarged scale, taken on line b, Fig. 2, throughaportion of one side of the thimble.

My invention comprises a wire screen or netting having an openingtherein and means for fastening the outer edges thereof to the woodframe-work around the thimble-opening, a circular flanged frame havingsuitable hooks for holding the same in said screen, an outer casingfitted to and heldby said circular frame and adapted to bear against theouter surface of the chimney, and an inner adj ustable pipe fastened atone end in the chimneyopening and at its other end resting loosely inthe circular frame, said parts being constructed and arranged ashereinafter more fully specified, for the purpose set forth.

Abetter understanding of my invention may be had from the followingdetailed description.

Referring to the drawings, the part marked- 0 represents part of anordinary chimney having an opening therein to receive the thimble. Theparts d show the frame-work of wood around said thimble-opening. To theface of said woodwork is fastened, by means of large tacks e or othersuitable fastenings, the outer edges of awire screen or netting, f,having an opening therein to receive a circular collar or frame, 9. Saidcollar is made with a face-rim, g, and two inwardlyprojecting flanges, g9, also being provided with a shoulder, 9*, and with holding hooks orflanges 9 four of the latter in this instance.

The part his an outer casing fitted over the flange g", and extendingbetween collar 9 and the outer face, h, of the chimney when the bilityto fire around the thimble.

thimble is fitted in position for use, as shown in Fig. 3.

The parti is an inner pipe, one end of which is extended through thethimble-opening in the chimney and fastened therein, as is usual forcommon thimbles. The other end of said pipe extends nearly or quite upto the shoulder on collarg inside of the flange g and said flange ismade considerably flaring upon the side next to pipe i, as is shown inFigs. 3 and 4, for the purpose of admitting of considerable play betweensaid pipeiand the collar. Therefore it is obvious that if an unequalsettlement of the chimney or wood-work occurs the aforesaid parts adjustthemselves to said settlement; or, in other words, the outer end ofpiper has sufficient movement in the collar to allow either the chimneyor the wood-work to settle without inj ury to the plastering, which factI have fully demonstrated in practice. The opening in the chimney toreceive pipe 73 is preferably made a trifle flaring toward the outside,as indicated by heavy lines 0, so as to facilitate the aforesaidself-adjustment and prevent the usual bulging or breaking of theplastering.

By the foregoing construction and arrangement it will be seen that anair-space is provided between the inner pipe, i, and outer casing, h,and also between said outer casing, h, and the wood-work, therebyremoving all lia- The outer end of said thimble being supported by thewire screen f, instead of by brick-work, as usual, allows of theadjustment in case of unequal settlement, as previously specified, whileat the same time affording an effectual protection againstfire. Saidwirescreen f not only serves as a support for the thimble, but also forthe plastering k, in place of the usual wood lathing, which is extendedonly to the outer edge of said screen in this instance, the whole beingplastered over flush with the face of the rim 9 on collar 9, as shown inFig. 3, to produce a smooth outer surface. funnel Z(shown by dottedlines in said figure) is inserted into the thimble, three separatethicknesses of incornbustible materialare interposed between the fireand woodwork, in addition to the wire screen and air-spaces previouslydescribed.

When the smokea If desired, a stop or gage, on, may be formed upon orsecured to the inner surface of pipet to govern the distance that thesmoke-funnel is to be inserted into the thimble, thus obviating anyliability of pushing the same in too far across the chimney-flue, asoften occurs where such a stop is not used. n

In fitting the screen f to collar gsaid screen is placed so that itsopening will come over the rim 9. It is then pressed down over theholding-hooks 9 being so arranged as to bring the open edges of the wiremesh (produced by cutting the opening) over said hooks, thus allowingthe hooks to be forced up through said open edges. By then turning thescreen the wires thereof are brought under said hooks and the collar andsaid screen thereby fastened together, as shown in the drawings. Anyother equivalent means of fastening said parts may be employed, ifdesired, in lieu of said holding-hooks; and although metal ispreferable, any other material or materials suitable for the purpose maybe employed in the construction of the thimble.

Having described my invention,what I claim therein as new and of myinvention is- 1. A thimble for chimneys comprising, in combination, aface-screen of wire provided with a central opening, whereby the outerend of the collar may be inserted and supported in said screen, said.collar having a face-rim to plaster against and suitable meansforfastening the collar to the screen; also provided with twoinwardly-projecting flanges, an inner pipe having a supportat one end inthe chimney and at its other end in the collar, and an outer casinginterposed between the collar and a chimney when the thimble is fittedin position,

substantially as set forth.

2. The combination of the adjustable pipe i, having a hearing. at oneend in the chimney and at its other end in collar 9, with said collar 9,having a flange to hold the outer end of said piped and a flange or rimto plaster against; also provided with means for fastening it to wirescreen f, and said wire screen having an opening to receive collar 9,and means for fastening its outer edges to the wood-work around thethimble-opening, substantially as shown and specified.

3. The combination of a chimney-thimble with a piece of wire netting orscreen for supporting the outer end thereof, adapted to be fastened tothe wood-work around the thimbleopening, and upon Which the mortar usedto cover the walls may be spread, substantially as and for the purposeset forth.

PATRICK D. SEXTON.

